Sound Processors for BOOM BOX / Mini-component Stereo
Single Power Supply Sound Processors
with Built-in Pre Amplifier for Tape Recording
and Play Back (With Integrated 2-/3- band Equalizer)
BD3401KS2,BD3402KS2
No.10086EAT03
●Description
The Sound Processor with built-in record/play functions for cassette players, is suited for sound quality products such as,
BOOM BOX, mini- and micro-audio systems. It incorporates various functions ranging from audio source selectors to
preamplifiers at the front stage, preamplifier for cassette recording/playing, and a 2-wire serial bus.
●Features
1) Provides Surround and Bass Boost with the Soft-switching feature to reduce the shock sound at switching (BD3401KS2)
2) Provides a specialized power supply terminal in a digital circuit, in order to set and maintain the state inside the IC
by the minute stand-by current.
3) Built-in preamplifier for cassette recording/playing allows for minimal external components, freeing up board space.
4) Arranges all I/O terminals to a single point and allows easy PCB routing.
5) Volume and Tone implemented with a resistance ladder circuit; achieving high performance with low noise and low distortion
6) Energy-saving design resulting in low current consumption, by utilizing the BiCMOS process.
It has the advantage in quality over the scaling down the power heat control of the internal regulators.
●Applications
BOOM BOX, mini-audio systems, and micro-audio systems.
●Product lineup
Parameter
Equalizer
Volume
Cassette Recording/Playing Amplifier
Karaoke
Microphone Input
Subwoofer Output
Output for Spectrum Analyzer
Surround
Bass Boost
Package
●Absolute maximum ratings (Ta=25℃)
Items
Power Supply Voltage
BD3401KS2
3 band(BASS, MIDDLE, TREBLE)
0 to -44dB/2dB step
-44 to -76dB/4dB step, -∞dB
○
○
○
○
○
○
○
SQFP-T64
BD3402KS2
2 band(BASS, TREBLE)
0 to -44dB/2dB step
-44 to -76dB/4dB step, -∞dB
○
SQFP-T64
Symbol
Ratings
Unit
Vcc
10
V
Vdd
6
V
Power Dissipation
Pd
1200*
mW
Input Voltage Range
Vin
GND-0.3 to VCC+0.3
V
Operating Temperature Range
Topr
-25 to +75
℃
Storage Temperature Range
Tstg
-55 to +125
℃
*
Reduced by 12 mW/℃ over 25℃, when installed on the standard board (size: 70×70×1.6mm).
●Operating voltage range
Device Name
BD3401KS2
BD3402KS2
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© 2010 ROHM Co., Ltd. All rights reserved.
Symbol
Range
Vcc
8 to 9.5
Vdd
3 to 5.5
1/18
Unit
V
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
●Electrical characteristics
BD3401KS2
Ta=25 ℃ , VCC=9V, VDD=5V, f=1kHz, Vi=1Vrms,RL=10kΩ,Rg=600Ω, INPUT SELECTOR=Ach, INPUT GAIN=0dB,
VOLUME=0dB, TREBLE=0dB, BASS=0dB, MIDDLE=0dB, TONE ATT=0dB, MUX=STEREO, MIXING=OFF, MIXING
GAIN=0dB, PLAY BACK=TAPE A, REC=OFF, LINE=OFF, MIC=OFF, BASS BOOST=OFF, SURROUND=OFF, AMS=OFF,
ALC=OFF, INPUT=pin59,60, OUTPUT=pin32,33, unless otherwise noted.
Limits
Parameter
Symbol
Unit
Conditions
Min. Typ. Max.
Circuit Current
IQ
-
35
50
mA
(No signal)
Output Voltage Gain
Gv
-2
0
2
dB
INPUT GAIN=0dB
THDt
-
0.005
0.05
%
BW=400 to 30kHz
OUT=pin32,33,53,54
Maximum Output Voltage
Vomaxt
2.0
2.5
-
Vrms
THD=1%, BW=400 to 30kHz
OUT=pin32,33,53,54
Residual Noise Voltage*
Vr
-
1.8
6.0
µVrms
Rg=0Ω, Vol=-dB, BW=IHF-A,
Output Noise Voltage*
Vno
-
3.0
9.0
µVrms
Rg=0Ω, Vol=0dB BW=IHF-A
Cross-talk between Channels*
CTC
-
-80
-70
dB
Rg=0Ω, BW=IHF-A
VOLOUT=1Vrms
Cross-talk between Selectors*
CTS
-
-80
-70
dB
Rg=0Ω, BW=IHF-A
Input Impedance
Rin
32
47
62
kΩ
Pin1 to 4, 59 to 64
THDmix
-
0.01
0.1
%
BW=400 to 30kHz, MIXING=ON
INPUT SELECTOR=B
Vomaxmix
2.0
2.5
-
Vrms
Gvp
23
25
27
dB
THDp
-
0.01
0.1
%
Vomaxp
2.0
2.5
-
Vrms
Noise Voltage in input term*
Vnin
-
0.7
6.0
µVrms
PB MUTE Amount
PBM
-
-
-70
dB
ALC Operation Level
ALC
0.5
0.7
0.9
Vrms
Total Harmonic Distortion ratio
THDr
-
0.2
1
%
Output Noise Voltage*
Vnor
-
40
120
µVrms
MIXING
TOTAL
Total Harmonic Distortion ratio
Total Harmonic Distortion ratio
Maximum Output Voltage
Output Voltage Gain
REC
PLAYBACK
Total Harmonic Distortion ratio
Maximum Output Voltage
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2/18
THD=1%, BW=400 to 30kHz
MIXING=ON
INPUT SELECTOR=B
Vi=20mVrms, pin5-6, 7-8=short
IN=pin9,10 OUT=pin6,7
Vi=20mVrms BW=400 to 30kHz
pin5-6, 7-8=short
IN=pin9,10 OUT=pin6,7
THD=1%, BW=400 to 30kHz
pin5-6, 7-8=short
IN=pin9,10 OUT=pin6,7
Rg=0Ω,BW=IHF-A
pin5-6, 7-8=short
IN=pin9,10 OUT=pin6,7
BW=IHF-A, pin5-6, 7-8=short
IN=pin9,10
PLAY BACK=MUTE
REC=ON ALC=ON
BW=400 to 30kHz
OUT=pin14,15
REC=ON ALC=ON
Rg=0Ω, BW=IHF-A
OUT=pin14,15
REC=ON ALC=ON
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
Parameter
Symbol
Limits
Min
Typ.
Max
Unit
THDmic
-
0.01
0.1
%
Maximum Output Voltage
Vomaxmic
2.0
2.5
-
Vrms
Spectrum Analyzer 1
Output Voltage Gain
Gvs1
-8
-6
-4
dB
OUTPUT=pin55
Spectrum Analyzer 2
Output Voltage Gain
Gvs2
-2
0
2
dB
OUTPUT=pin56
Surround Gain
Gsur
4
6
8
dB
SURROUND=ON
Vi=500mVrms
Vi=500mVrms
MIC
SPECTRUM
ANALYZER
BW=400 to 30kHz
MIC=ON
Total Harmonic Distortion ratio
TREBLE
THD=1%, BW=400 to 30kHz
MIC=ON
Treble Gain
Gt
-8 to +8(2dB/step)
dB
Treble Gain Setting Error
TE
-2
dB
MIDDLE
SURRO
UND
Conditions
Middle Gain
Gm
-8 to +8(2dB/step)
dB
Middle Gain Setting Error
ME
-2
-2
dB
Bass Gain
Gb
-8 to +8(2dB/step)
dB
Bass Gain Setting Error
BE
-2
0
-2
dB
Gams
33
35
37
dB
OUTPUT=pin40
AMS=ON, Vi=20mVrms
Volume Setting Error 1
VE1
-2
0
2
dB
0 to -48dB,BW=IHF-A
VOLOUT=1Vrms
Volume Setting Error 2
VE2
-3
0
3
dB
-52 to –76dB,BW=IHF-A
VOLOUT=1Vrms
Maximum Attenuation*
Vmin
-
-
-90
dB
BW=IHF-A VOLOUT=1Vrms
Total Harmonic Distortion ratio
THDs
-
0.01
0.1
%
Vi=500mVrms
BW=400 to 30kHz,OUT=pin25
No LPF
Vomaxs
1.5
2.0
2.5
Vrms
0
Vi=500mVrms
Vi=500mVrms
SUBWOOFER
VOLUME
AMS
BASS
0
2
AMS EQ Gain
Maximum Output Voltage
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3/18
THD=3%, BW=400 to 30kHz
OUT=pin25, No LPF
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
BD3402KS2
Ta=25℃, VCC=9V, VDD=5V, f=1kHz, Vi=1Vrms, RL=10kΩ, Rg=600Ω,INPUT SELECTOR=Ach, INPUT GAIN=0dB,
VOLUME=0dB, TREBLE=0dB, BASS=0dB, TONE ATT=0dB, MUX=STEREO, MIXING=OFF, MIXING GAIN=0dB,
REC=OFF, LINE=OFF, ALC=OFF INPUT=pin59,60, OUTPUT=pin32,33, unless otherwise noted.
Limits
Parameter
Symbol
Unit
Conditions
Min. Typ. Max.
Circuit Current
IQ
-
28
50
mA
(No signal)
Output Voltage Gain
Gv
-2
0
2
dB
THDt
-
0.005
0.05
%
Maximum Output Voltage
Vomaxt
2.0
2.5
-
Vrms
Residual Noise Voltage*
Vr
-
1.5
5.0
µVrms
Output Noise Voltage*
Vno
-
2.5
8.0
µVrms
Cross-talk between Channels*
CTC
-
-80
-70
dB
Cross-talk between Selectors*
CTS
-
-80
-70
dB
INPUT GAIN=0dB
BW=400 to 30kHz
OUT=pin32,33,53,54
THD=1%, BW=400 to 30kHz
OUT=pin32,33,53,54
Rg=0Ω, Vol=-∞dB
BW=IHF-A,
Rg=0Ω, Vol=0dB BW=IHF-A
Rg=0Ω, BW=IHF-A
VOLOUT=1Vrms
Rg=0Ω, BW=IHF-A
Input Impedance
Rin
32
47
62
kΩ
THDmix
-
0.01
0.1
%
Vomaxmix
2.0
2.5
-
Vrms
Gvp
23
25
27
dB
THDp
-
0.01
0.1
%
Vomaxp
2.0
2.5
-
Vrms
Noise Voltage in input term*
Vnin
-
0.7
6.0
µVrms
PB MUTE Amount
PBM
-
-
-70
dB
ALC Operation Level
ALC
0.5
0.7
0.9
Vrms
Total Harmonic Distortion ratio
THDr
-
0.2
1
%
Output Noise Voltage*
Vnor
-
40
120
µVrms
MIXING
TOTAL
Total Harmonic Distortion ratio
Total Harmonic Distortion ratio
Maximum Output Voltage
Output Voltage Gain
BASS BASS TREBLE
Maximum Output Voltage
Treble Gain
Gt
-8 to +8(2dB/step)
dB
Treble Gain Setting Error
TE
-2
dB
Bass Gain
Gb
Bass Gain Setting Error
BE
-2
0
-2
dB
VOLUME
REC
PLAYBACK
Total Harmonic Distortion ratio
Volume Setting Error 1
VE1
-2
0
2
dB
Volume Setting Error 2
VE2
-3
0
3
dB
Maximum Attenuation*
Vmin
-
-
-90
dB
0
2
-12 to +12(3dB/step)
dB
Pin1 to 4, 59 to 64
BW=400 to 30kHz
MIXING=ON
INPUT SELECTOR=B
THD=1%, BW=400 to 30kHz
MIXING=ON
INPUT SELECTOR=B
Vi=20mVrms
pin5-6, 7-8=short
IN=pin11,12 OUT=pin6,7
Vi=20mVrms BW=400 to 30kHz
pin5-6, 7-8=short
IN=pin11,12 OUT=pin6,7
THD=1%, BW=400 to 30kHz
pin5-6, 7-8=short
IN=pin11,12 OUT=pin6,7
Rg=0Ω,BW=IHF-A
pin5-6, 7-8=short
IN=pin11,12 OUT=pin6,7
BW=IHF-A, pin5-6, 7-8=short
IN=pin11,12
PLAY BACK=MUTE
REC=ON ALC=ON
BW=400 to 30kHz
OUT=pin14,15
REC=ON, ALC=ON
Rg=0Ω, BW=IHF-A
OUT=pin14,15
REC=ON, ALC=ON
Vi=500mVrms
Vi=500mVrms
0 to -48dB,BW=IHF-A
VOLOUT=1Vrms
-52 to –76dB,BW=IHF-A
VOLOUT=1Vrms
BW=IHF-A VOLOUT=1Vrms
・For measurements marked with *, VP-9690A (Average value wave detection, Effective value display) filter by Matsushita Communication Industrial is used.
・Phase relation between Input/Output signal terminals is the same (Inputs: pin59-64, pin1-4, Outputs: pin32, 33).
・This IC is not designed to be radiation-resistant.
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© 2010 ROHM Co., Ltd. All rights reserved.
4/18
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
●Control signal specifications
1. Signal Timing Conditions
・Data is read on the rising edge of the clock.
・Latch is read on the falling edge of the clock.
・Latch signal must terminate with the LOW state.
・To avoid malfunctions, clock and data signals must terminate with the LOW state.
1byte=8bit
SC
(CLOCK)
90%
tsu
90%
twc
10%
thd
SI
DATA
LATCH
90%
twd
ts
90%
90%
90%
10%
10%
twc
th
10%
10%
thd
ts1
90%
twd
DATA
tsd
th1
90%
DATA
10%
tw1
90%
LATCH
Low
Fig.1
Parameter
Symbol
Limits
Min
Typ.
Max
Unit
Minimum Clock Width
twc
2.0
-
-
µS
Minimum Data Width
twd
2.0
-
-
µS
Minimum Latch Width
tw1
2.0
-
-
µS
Data Set-up Time (DATA→CLK)
tsd
1.0
-
-
µS
Data Hold Time (CLK→DATA)
thd
1.0
-
-
µS
Latch Set-up Time (CLK→LATCH)
ts1
1.0
-
-
µS
Latch Hold Time (DATA→LATCH)
th1
1.0
-
-
µS
Latch Low Set-up Time
ts
1.0
-
-
µS
Latch Low Hold Time
th
1.0
-
-
µS
2. Voltage Conditions for Control Signals
Parameter
Limits
Symbol
Min
Typ
Max
Unit
“H” Input Voltage
Vcc=8 to 9.5V
2.2
-
5.5
V
“L” Input Voltage
Vcc=8 to 9.5V
0
-
1.0
V
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© 2010 ROHM Co., Ltd. All rights reserved.
5/18
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
●Control data format list
(BD3401KS2)
・Basic Configuration of Control Data Format
←Data input direction
MSB
D7
D6
D5
Data
D6
D5
D3
D2
D7
D4
D3
D5
D1
D0
0
0
0
D2
D1
D0
0
0
1
D3
D2
D1
D0
TONE
ATT(1)
0
1
0
D4
D3
D2
D1
D0
0
1
1
D4
TONE
ATT(2)
D3
D2
D1
D0
0
1
0
0
1
1
0
0
D3
D2
D1
D0
1
0
1
D4
D3
Volume
D7
D6
Data(3)
D5
D4
Treble
D7
D6
Data(4)
D5
Bass
D7
D6
Data(5)
D5
Middle
D7
D6
Data(6)
D5
D4
Subwoofer Gain
D7
Data(7)
D6
MUX
D7
MIXING
D6
PLAY BACK
D7
Bass
Boost
D6
Surround
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© 2010 ROHM Co., Ltd. All rights reserved.
D5
D0
D2
Input Gain
D6
D1
Select Address
Input Selector
Data(2)
Data(9)
D4
Data
・Control Data Formats
←Data input direction
D7
Data(1)
Data(8)
LSB
D4
D3
MIXING GAIN
D5
D4
D3
D2
D1
D0
REC
LINE
MIC
1
1
0
D5
D4
D3
D2
D1
D0
ALC
Vocal
Fader
1
1
1
AMS
6/18
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
(BD3402KS2)
・Basic Configuration of Control Data Format
Data input direction
MSB
D7
D6
LSB
D5
Data
D4
D3
D2
Data
・Control Data Formats
Data input direction
D7
Data(1)
D6
D7
D5
D4
D3
Input Gain
D6
D5
D4
D3
Volume
D7
D6
Data(3)
D5
D4
Treble
D7
D6
Data(4)
D5
D4
Bass
D7
Data(5)
D6
MUX
D7
Data(6)
D5
D4
MIXING
D6
*
D0
Select Address
Input Selector
Data(2)
D1
D2
D1
D0
0
0
0
D2
D1
D0
0
0
1
D3
D2
D1
D0
TONE
ATT(1)
0
1
0
D3
D2
D1
D0
TONE
ATT(2)
0
1
1
D3
D2
D1
D0
1
0
1
MIXING GAIN
D5
D4
D3
D2
D1
D0
REC
LINE
ALC
1
1
0
・* Indicates 0 or 1.
・By changing the setting of Select Address, nine different control formats are selectable.
・In every power-on sequence, all of the address data must be initialized.
Example:
Data input direction
MSB
LSB MSB
LSB MSB
LSB MSB
LSB
MSB
Data(1)
L
Data(2)
L
Data(3)
L
Data(4)
L
・・・
Data(9)
LSB
L
“L” means a “latch.”
・After power-on, for the second and subsequent times, only the necessary data can be selected for setting.
Example: When changing the volume,
Data input direction
MSB
LSB
Data(2)
L
“L” means a “latch.”
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7/18
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
・TONE ATT settings
TONE ATT can be set to either one of three modes: 0dB, -4dB and -8dB using D3 in Data (3) or Data (4).
When setting TONE ATT, data should be sent as follows:
(1)TONE ATT=-4dB
(a) Sending Data (3) only
MSB
LSB
Data(3)
L
(b) Sending all the data
MSB
LSB MSB
Data(1)
L
Data(2)
LSB
L
MSB
LSB MSB
Data(4)
L
LSB
Data(3)
L
MSB
・・・
LSB
Data(9)
L
Sending Data(3) after Data(4) follows that Data(3) is given a higher priority.
(2)TONE ATT=-8dB
(a) Sending Data(4) only
←MSB
LSB
Data(4)
L
(b) Sending all the data
MSB
LSB
Data(1)
MSB
L
Data(2)
LSB
L
MSB
LSB
Data(3)
MSB
L
LSB
Data(4)
MSB
L
・・・
LSB
Data(9)
L
Sending Data(4) after Data(3) follows that Data(4) is given a higher priority.
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8/18
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
●Pin description
(BD3401KS2)
Pin No.
Pin Name
Description
Pin No.
Pin Name
Description
1
D1
1ch input pin D
33
VOLOUT1
2
D2
2ch input pin D
34
BBNF1
1ch bass boost filter setting pin
3
E1
1ch input pin E
35
BBIN1
1ch bass boost filter setting pin
4
E2
2ch input pin E
36
VIN1
5
PBNF2
2ch PB filter setting pin
37
TONE OUT1
6
PBOUT2
2ch PB output pin
38
VIN2
7
PBOUT1
1ch PB output pin
39
TONE OUT2
8
PBNF1
1ch PB filter setting pin
40
AMS OUT
9
TAPE A1
1ch TAPE input pin A
41
BNF2
2ch bass filter setting pin
10
TAPE A2
2ch TAPE input pin A
42
BOUT2
2ch bass filter setting pin
11
TAPE B1
1ch TAPE input pin B
43
BOUT1
1ch bass filter setting pin
12
TAPE B2
2ch TAPE input pin B
44
BNF1
1ch bass filter setting pin
13
RECNF2
2ch REC filter setting pin
45
MNF1
1ch middle filter setting pin
14
RECOUT2
2ch REC output pin
46
MOUT1
1ch middle filter setting pin
15
RECOUT1
1ch REC output pin
47
MOUT2
2ch middle filter setting pin
16
RECNF1
1ch REC filter setting pin
48
MNF2
2ch middle filter setting pin
17
ALC
ALC time constant setting pin
49
TNF2
2ch treble filter setting pin
18
SC
Serial clock input pin
50
TNF1
1ch treble filter setting pin
19
SI
Serial data input pin
51
SUR1
Surround setting pin
20
VDD
Digital power supply pin
52
SUR2
Surround setting pin
21
GND
Ground pin
53
LINEOUT2
2chLINE output pin
22
VCC
Analog power supply pin
54
LINEOUT1
1chLINE output pin
23
1/2VCC
1/2VCC output pin
55
SAOUT2
Spectrum Analyzer output pin 2
24
FILTER
1/2 VCC pin
56
SAOUT1
Spectrum Analyzer output pin 1
25
SW OUT
Subwoofer output pin
57
CAP
Time constant setting pin for
absorbing switching shock sound
26
LF4
Primary LPF setting pin
58
MIC
MIC input pin A
27
LF3
Secondary LPF setting pin
59
A1
1ch input pin A
28
LF2
Secondary LPF setting pin
60
A2
2ch input pin A
29
LF1
Secondary LPF setting pin
61
B1
1ch input pin B
30
BBIN2
2ch bass boost filter setting pin
62
B2
2ch input pin B
31
BBNF2
2ch bass boost filter setting pin
63
C1
1ch input pin C
32
VOL OUT2
2ch output pin
64
C2
2ch input pin C
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9/18
1ch output pin
1ch volume input pin
1ch tone output pin
2ch volume input pin
2ch tone output pin
AMS output pin
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
●Block diagram, application circuit, pin assignment
(BD3401KS2)
VDD1
VDD2
10k
22k
4.7k
10µ
10k
4.7k
4.7k
0.1µ
1µ
4.7k
0.1µ
10µ
10µ
0.22µ
44
43
42
41
40
39
+
+
45
10µ
0.22µ
10µ
+
46
680
+
4.7µ
4.7µ
47
48
0.01µ
0.01µ
+
220k
+
0.01µ
0.01µ
4.7k
10µ
4.7k
4.7k
1µ
4.7k
+
4.7k
22k
38
36
37
35
34
33
0.0022µ
+
0.0022µ
BASS → MIDDLE → TREBLE
30
+
0.22µ
10k
5.1k
ATT
0
27
BUFFER
MIX
MIC MIX
VOCAL FADER
26
0.1µ
DiLIMITER
55
56
57
+
58
25
10µ
+
-
24
47µ
23
59
+
-
22
60
+
-
21
+
+
+
10µ
10k
0.1µ
+
+
10µ
f
+
-
10µ +
+
-
SOFT
SWITCH
+
0.33µ
+
10k
28
+
10µ +
fc=100HZ
+
10µ +
54
ATT
+
10µ +
+
-
G
+
+
0.1µ 10k
29
52
10µ
220k
+
SURROUND
53
680
31
+
51
10µ
32
0.22µ
+
50
1µ
+
BASS → MIDDLE → TREBLE
+
49
+
+
10µ
DIGITAL
CONTROL
Input
Selector
62
63
+
-
+
10µ
ALC
19
18
ALC
+
64
22µ
7
+
-
6
+
+
-
17
+
+
10µ
47µ
20
+
+
10µ
61
47µ
14
15
100k
9
330k 12k
10
13
+
470k 330k
330k 470k
10µ
10µ
0.01µ
10µ
390k
330p 220p
10µ
100k
4.7k
+
10µ
0.01µ
220p 330p
10µ
4.7k
100k
+
390k
0.01µ
16
+
10µ
+
10µ
12
0.01µ
10µ
10µ
11
+
8
+
12k 330k
+
10µ
5
+
4
+
3
+
2
+
1
10µ
UNIT
RESISTANCE : Ω
CAPACITANCE : F
Fig.2
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© 2010 ROHM Co., Ltd. All rights reserved.
10/18
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
●Pin description
(BD3402KS2)
Pin No.
Pin Name
Description
Pin No.
Pin Name
Description
1
D1
1ch input pin D
33
VOL OUT1
2
D2
2ch input pin D
34
NC
Non Connection
3
E1
1ch input pin E
35
NC
Non Connection
4
E2
2ch input pin E
36
VIN1
5
PBNF2
2ch PB filter setting pin
37
TONE OUT1
6
PBOUT2
2ch PB output pin
38
VIN2
7
PBOUT1
1ch PB output pin
39
TONE OUT2
8
PBNF1
1ch PB filter setting pin
40
NC
9
NC
Non Connection
41
BNF2
2ch bass filter setting pin
10
NC
Non Connection
42
BOUT2
2ch bass filter setting pin
11
TAPE 1
1ch TAPE input pin
43
BOUT1
1ch bass filter setting pin
12
TAPE 2
2ch TAPE input pin
44
BNF1
1ch bass filter setting pin
13
RECNF2
2ch REC filter setting pin
45
NC
Non Connection
14
RECOUT2
2ch REC output pin
46
NC
Non Connection
15
RECOUT1
1ch REC output pin
47
NC
Non Connection
16
RECNF1
1ch REC filter setting pin
48
NC
Non Connection
17
ALC
ALC time constant setting pin
49
TNF2
2ch treble filter setting pin
18
SC
Serial clock input pin
50
TNF1
1ch treble filter setting pin
19
SI
Serial data input pin
51
NC
Non Connection
20
VDD
Digital power supply pin
52
NC
Non Connection
21
GND
Ground pin
53
LINEOUT2
2chLINE output pin
22
VCC
Analog power supply pin
54
LINEOUT1
1chLINE output pin
23
NC
Non Connection
55
NC
Non Connection
24
FILTER
1/2 VCC pin
56
NC
Non Connection
25
NC
Non Connection
57
NC
Non Connection
26
NC
Non Connection
58
NC
Non Connection
27
NC
Non Connection
59
A1
1ch input pin A
28
NC
Non Connection
60
A2
2ch input pin A
29
NC
Non Connection
61
B1
1ch input pin B
30
NC
Non Connection
62
B2
2ch input pin B
31
NC
Non Connection
63
C1
1ch input pin C
32
VOL OUT2
2ch output pin
64
C2
2ch input pin C
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© 2010 ROHM Co., Ltd. All rights reserved.
11/18
1ch output pin
1ch volume input pin
1ch tone output pin
2ch volume input pin
2ch tone output pin
Non Connection
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
●Block diagram, application circuit, pin assignment
(BD3402KS2)
10µ
+
NC
NC
44
43
42
41
40
10µ
39
38
36
37
NC
NC
NC
NC
45
10µ
+
46
0.047µ
+
47
4.7k
NC
+
48
0.047µ
10µ
+
10µ
4.7k
35
34
33
0.0022µ
+
49
BASS
32
TREBLE
10µ
0.0022µ
+
50
NC
52
BASS
ATT
+
10µ
+
10µ
53
+
-
54
+
-
NC
55
NC
56
NC
57
NC
28
NC
BUFFER
MIX
27
NC
26
NC
25
NC
+
-
24
47µ
58
23
59
22
60
+
-
+
29
ATT
21
NC
+
+
10µ
+
NC
+
10µ
30
+
-
NC
TREBLE
NC
+
51
+
NC
31
+
10µ
+
Input
Selector
62
DIGITAL
CONTROL
+
63
+
-
10µ
+
47µ
20
+
10µ
61
47µ
ALC
19
18
ALC
22µ
+
+
-
+
+
-
+
17
+
10µ
64
100k
10µ
390k
9
0.01µ
10
11
12
13
14
470k 330k
10µ
10µ
15
16
330k 470k
0.01µ
0.01µ
330p 220p
390k
220p 330p
100k
10µ
4.7k
+
10µ
0.01µ
+
10µ
8
330k 12k
+
+
10µ
+
+
10µ
7
10µ
4.7k
100k
+
6
12k 330k
+
5
+
4
NC
3
NC
2
+
1
10µ
UNIT
RESISTANCE : Ω
CAPACITANCE : F
Fig.3
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© 2010 ROHM Co., Ltd. All rights reserved.
12/18
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
35
30
30
25
25
20
15
20
15
10
10
5
5
0
0
0
2
4
6
8
2
4
6
8
10
10
100
VCC(V)
VCC(V)
Fig.4 Circuit Current - Supply Voltage
(BD3401KS2)
OUTPUT VOLTAGE(Vrms)
0
-1
-2
-3
-4
-5
0
10
5
4
3
2
1
GAIN(dB)
35
ICC(mA)
ICC(mA)
●Reference data
10
1
1
Fig.6 Voltage Gain - Frequency
15
+8dB(100Hz)
10
GAIN(dB)
5
THD+N(%)
0.1
0.1
0
-8dB～+8dB
2dB/step
-5
0.01
0.01
-10
0.001
0.001
0.01
0.1
1
10
0.001
0.001
0.01
0.1
1
10
OUTPUT VOLTAGE(Vrms)
Fig.7 Output Voltage - Input Voltage
Fig.8 Total Harmonic Distortion ratio
- Output Voltage
15
+8dB(10kHz)
10
5
0
-5
-8dB～
+8dB
2dB/step
-12dB(100Hz)
1000
10000
100000
0
-5
-10
－8dB(10kHz)
-8dB(1kHz)
-15
10
10
FREQUENCY(Hz)
Fig.10 Bass Gain - Frequency
(BD3402KS2)
－8dB～+8dB
2dB/step
5
-15
100
100
1000
10000
100
100000
Fig.11 Middle Gain – Frequency
(BD3401KS2)
10
10
8
100000
20
12dB
9dB
0
GAIN(dB)
GAIN(dB)
GAIN(dB)
10000
Fig.12 Treble Gain - Frequency
10
-10
1000
FREQUENCY(Hz)
FREQUENCY(Hz)
20
0
100000
15
-10
-15
10000
Fig.9 Bass Gain - Frequency
(BD3401KS2)
GAIN(dB)
-12dB～
+12dB
3dB/step
10
1000
+8dB(1kHz)
0
-10
100
FREQUENCY(Hz)
10
GAIN(dB)
GAIN(dB)
10
15
+12dB(100Hz)
10
-5
-8dB(100Hz)
-15
INPUT VOLTAGE(Vrms)
5
10000 100000
FREQUENCY(Hz)
Fig.5 Circuit Current - Supply Voltage
(BD3402KS2)
10
1000
6
4
-10
6dB
-20
0dB
-30
-40
-20
2
-30
0
-50
10
100
1000
10000 100000
FREQUENCY(Hz)
Fig.13 Bass Boost Gain - Frequency
(BD3401KS2)
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© 2010 ROHM Co., Ltd. All rights reserved.
-60
10
100
1000
10000
100000
FREQUENCY(Hz)
Fig.14 Surround Gain - Frequency
(BD3401KS2)
13/18
10
100
1000
10000
100000
FREQUENCY(Hz)
Fig.15 Subwoofer Gain - Frequency
(BD3401KS2)
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
OUTPUT VOLTAGE(Vrms)
80
60
50
40
30
20
10
0
10
100
1000
10000
10
1
1
0.1
FREQUENCY(Hz)
0.1
0.01
OUTPUT VOLTAGE(Vrms)
5
0
-5
-10
-15
100
1000
10000
100000
FREQUENCY(Hz)
10
1
0.1
1
0.1
0.01
0.001
0.001
0.01
0.1
1
10
INPUT VOLTAGE(Vrms)
Fig.19 Amp Gain - Frequency (REC)
10
Fig.18 Total Harmonic Distortion ratio
- Output Voltage (PB)
10
10
1
OUTPUT VOLTAGE(Vrms)
Fig.17 Output Voltage – Input Voltage
(PB)
15
GAIN(dB)
0.001
INPUT VOLTAGE(Vrms)
Fig.16 Amp Gain - Frequency (PB)
10
0.1
0.01
0.01
0.0001
100000
THD+N(%)
GAIN(dB)
70
10
THD+N(%)
90
Fig.20 Output Voltage – Input Voltage
(REC)
0.01
0.001
0.01
0.1
1
OUTPUT VOLTAGE(Vrms)
Fig.21Total Harmonic Distortion ratio
– Output Voltage (REC)
40
GAIN(dB)
30
20
10
0
-10
-20
10
100
1000
10000
100000
FREQUENCY(Hz)
Fig.22 AMS Gain - Frequency
(BD3401KS2)
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© 2010 ROHM Co., Ltd. All rights reserved.
14/18
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
●Notes for use
1) Numbers and data in entries are representative design values and are not guaranteed values of the items.
2) Although ROHM is confident that the example application circuit reflects the best possible recommendations, be sure to
verify circuit characteristics for your particular application. Modification of constants for other externally connected circuits
may cause variations in both static and transient characteristics for external components as well as this Rohm IC. Allow
for sufficient margins when determining circuit constants.
3) Absolute maximum ratings
Use of the IC in excess of absolute maximum ratings, such as the applied voltage or operating temperature range (Topr),
may result in IC damage. Assumptions should not be made regarding the state of the IC (short mode or open mode)
when such damage is suffered. A physical safety measure, such as a fuse, should be implemented when using the IC at
times where the absolute maximum ratings may be exceeded.
4) GND potential
Ensure a minimum GND pin potential in all operating conditions. Make sure that no pins are at a voltage below the GND
at any time, regardless of whether it is a transient signal or not.
5) Thermal design
Perform thermal design, in which there are adequate margins, by taking into account the permissible dissipation (Pd) in
actual states of use.
6) Short circuit between terminals and erroneous mounting
Pay attention to the assembly direction of the ICs. Wrong mounting direction or shorts between terminals, GND, or other
components on the circuits, can damage the IC.
7) Operation in strong electromagnetic field
Using the ICs in a strong electromagnetic field can cause operation malfunction.
8) Serial control
For the SC and SI terminals, the wiring and layout patterns should be routed as not to cause interference with the
analog-signal-related lines.
9) Power ON/OFF
At power ON/OFF, a shock sound will be generated and, therefore, MUTE shall be applied.
10) Start-up sequence of the power supplies
VDD and VCC should be turned on simultaneously or VDD first, followed by VCC.
11) Function switching
(BD3401KS2)
For all functions except Master Volume, Treble, Middle, Bass, Surround, and Bass Boost, MUTE must be applied
during setup.
(BD3402KS2)
For all the functions except Master Volume, Treble and Bass, MUTE must be applied during setup..
12) Power-ON Reset
A built-in circuit for performing initialization inside the IC at power-ON is provided. In unstable systems it is recommended
that the data shall be sent to all the addresses during power-ON, until this operation cycle is completed. Mute should be
applied during this cycle.
Function
Initial State
BD3401KS2
BD3402KS2
MUTE
-5dB
0dB
0dB
0dB
0dB
0dB
0dB
STEREO
OFF
3dB
TAPE A
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
No selector
○
○
○
-
Input Selector
Input Gain
Volume
Treble
Bass
Middle
TONE ATT
Subwoofer
MUX
Mixing
Mixing Gain
PLAY BACK
REC
LINE
MIC
Bass Boost
Surround
AMS
ALC
Vocal Fader
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© 2010 ROHM Co., Ltd. All rights reserved.
15/18
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
13) Constraints of serial control
(1) On soft-switching of the BASS BOOST, SURROUND and AMS functions, data must not be serially sent to the
functions involved before the switching operation is completed.
Data (1) to (8) can be serially sent immediately after sending Data (9).
For functions that need to use soft-switch, data (Data (9)) can be serially
sent on the same select address.
Direction
Data(9)
Data (9)
T
The time interval: T(sec) between Data (9) must be set to have a suffiecient delay
time. For example, 100ms or more when C on pin57 is 0.33µF.
Fig.23
(2) When switching AMS ON and OFF, a shock sound will be generated.
Using MUTE provided on VOLUME, control data should be sent in order to avoid outputting the shock sound
from VOLOUT1,2 (pin32,33) as described in the figure below:
Direction
AMS OFF ON
VOLUME
MUTE
DATA
AMS ON OFF
VOLUME
SETTING
DATA
AMS
OFF
AMS
ON
T2
T1
Time: T1 is an arbitrary number
Time: T2 should be 100ms or more
when C on pin57 is 0.33µF.
Fig.24
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© 2010 ROHM Co., Ltd. All rights reserved.
16/18
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
●Thermal derating characteristic
1600
1400
SQFP-T64
Power Dissipation : Pd （mW)
1200
1000
800
600
400
200
0
0
25
50
75
100
125
Ambient Temperature: Ta(℃)
When installed on the ROHM standard board
(size: 70×70×1.6mm, Glass epoxy board)
Fig.25
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© 2010 ROHM Co., Ltd. All rights reserved.
17/18
2010.10 - Rev.A
Technical Note
BD3401KS2,BD3402KS2
●Ordering part number
B
D
3
Part No.
4
0
1
Part No.
3401,3402
K
S
2
Package
KS2: SQFP-T64
Packaging and forming specification
None: Tray
SQFP-T64
14.0±0.3
12.0±0.2
33
49
32
64
17
Container
Tray (with dry pack)
Quantity
1000pcs
Direction of feed Direction of product is fixed in a tray
0.5
12.0 ± 0.2
14.0 ± 0.3
48
1pin
16
1
1.4 ± 0.1
0.1 ± 0.1
0.125±0.1
0.65
0.15
0.3±0.1
∗ Order quantity needs to be multiple of the minimum quantity.
(Unit : mm)
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© 2010 ROHM Co., Ltd. All rights reserved.
18/18
2010.10 - Rev.A
Datasheet
Notice
Precaution on using ROHM Products
1.
Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment,
OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you
(Note 1)
, transport
intend to use our Products in devices requiring extremely high reliability (such as medical equipment
equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car
accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or
serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance.
Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any
damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific
Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN
USA
EU
CHINA
CLASSⅢ
CLASSⅡb
CLASSⅢ
CLASSⅢ
CLASSⅣ
CLASSⅢ
2.
ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor
products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate
safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which
a failure or malfunction of our Products may cause. The following are examples of safety measures:
[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
3.
Our Products are designed and manufactured for use under standard conditions and not under any special or
extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way
responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any
special or extraordinary environments or conditions. If you intend to use our Products under any special or
extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of
product performance, reliability, etc, prior to use, must be necessary:
[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents
[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust
[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,
H2S, NH3, SO2, and NO2
[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves
[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items
[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of
flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning
residue after soldering
[h] Use of the Products in places subject to dew condensation
4.
The Products are not subject to radiation-proof design.
5.
Please verify and confirm characteristics of the final or mounted products in using the Products.
6.
In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect
product performance and reliability.
7.
De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual
ambient temperature.
8.
Confirm that operation temperature is within the specified range described in the product specification.
9.
ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in
this document.
Precaution for Mounting / Circuit board design
1.
When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product
performance and reliability.
2.
In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the
ROHM representative in advance.
For details, please refer to ROHM Mounting specification
Notice - GE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.002
Datasheet
Precautions Regarding Application Examples and External Circuits
1.
If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the
characteristics of the Products and external components, including transient characteristics, as well as static
characteristics.
2.
You agree that application notes, reference designs, and associated data and information contained in this document
are presented only as guidance for Products use. Therefore, in case you use such information, you are solely
responsible for it and you must exercise your own independent verification and judgment in the use of such information
contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses
incurred by you or third parties arising from the use of such information.
Precaution for Electrostatic
This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper
caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be
applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron,
isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).
Precaution for Storage / Transportation
1.
Product performance and soldered connections may deteriorate if the Products are stored in the places where:
[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2
[b] the temperature or humidity exceeds those recommended by ROHM
[c] the Products are exposed to direct sunshine or condensation
[d] the Products are exposed to high Electrostatic
2.
Even under ROHM recommended storage condition, solderability of products out of recommended storage time period
may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is
exceeding the recommended storage time period.
3.
Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads
may occur due to excessive stress applied when dropping of a carton.
4.
Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of
which storage time is exceeding the recommended storage time period.
Precaution for Product Label
QR code printed on ROHM Products label is for ROHM’s internal use only.
Precaution for Disposition
When disposing Products please dispose them properly using an authorized industry waste company.
Precaution for Foreign Exchange and Foreign Trade act
Since our Products might fall under controlled goods prescribed by the applicable foreign exchange and foreign trade act,
please consult with ROHM representative in case of export.
Precaution Regarding Intellectual Property Rights
1.
All information and data including but not limited to application example contained in this document is for reference
only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any
other rights of any third party regarding such information or data. ROHM shall not be in any way responsible or liable
for infringement of any intellectual property rights or other damages arising from use of such information or data.:
2.
No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any
third parties with respect to the information contained in this document.
Other Precaution
1.
This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.
2.
The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written
consent of ROHM.
3.
In no event shall you use in any way whatsoever the Products and the related technical information contained in the
Products or this document for any military purposes, including but not limited to, the development of mass-destruction
weapons.
4.
The proper names of companies or products described in this document are trademarks or registered trademarks of
ROHM, its affiliated companies or third parties.
Notice - GE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.002
Datasheet
General Precaution
1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.
ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny
ROHM’s Products against warning, caution or note contained in this document.
2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior
notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s
representative.
3.
The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all
information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or
liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or
concerning such information.
Notice – WE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.001
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